10 40 400
20 30 600
25 25 625
35 15 525
40 60 2400
I think
Answer:
a - (6-9)
Hopefully this is correct
Step-by-step explanation:

so, that gives you the compounded amount, after 10 years, if you want to know how much interest was earned? well, just subtract the Principal from the Amount, or A - P <--- that's how much interest was earned
$4.30X40%=1.72
4.30-1.72=2.58
2.58X6%=.15
2.58+.15=2.73
Final price: $2.73